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Best Caffeine Essays

Comm 10
Major #1 Informative Speech Evidence Homework #1
Topic: Caffeine
Preview: Every morning when I wake up the first thing I do after brushing my teeth is walk straight to the coffee pot. I pour myself a hot rich cup of coffee to start the day off. On my way out the door I grab my go cup and fill it up. When I finally get to school I get myself another cup of coffee. How many miller grams of caffeine do you think I have drank at this point? According to the Mayo Clinic a healthy...

The Effects of Caffeine 1
The Effects of Caffeine and Placebo on Computer Typing Skills
St. Olaf College
May 14, 2009
The Effects of Caffeine 2
Abstract
This study examined the effects of caffeinated versus caffeine-free CocaCola and Diet Coke on the speed, accuracy, error and words per minute of typing
skills. 30 undergraduate students participated in the experiment for academic
credit for an introductory to psychology class. The participants consumed their
choice of soda and were...

Julia Sellman
Neuroscience and Technology
Caffeine
In America today, nine out of ten individuals consumed caffeine. They were most
likely consuming it within either a cup of coffee, some kind of soda, or the latest energy
drink available. The effect of caffeine usually lasts about 2 hours and affects the body in
multiple ways. It increases production of acidic juices in the stomach, speeds up heart
rate, relaxes muscles found in the lungs to make breathing easier, prepares skeletal
muscles for...

1-1
EXPERIMENT 1 ISOLATION OF CAFFEINE FROM TEA
In this experiment you will isolate caffeine from tea leaves and prepare the salicylate derivative.
Introduction This experiment illustrates the isolation of a naturally occurring product from plant material -- caffeine from tea leaves. The experiment will provide experience in handling relatively small amounts of material and at the same time you will be exposed to several techniques and procedures which are fundamental for survival in an...

1,680 Words | 9 Pages

All Caffeine Essays

Caffeine in the diet
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Caffeine is a substance that is found in certain plants. It can also be man-made (produced synthetically) and then added to food products. It is a central nervous system stimulant and a diuretic (substance that helps rid your body of fluids).
Function
Caffeine is absorbed and passes quickly into the brain. It does not collect in the bloodstream or get stored in the body. It leaves the body...

I. Introduction
A. Attention Getter: If you drink some kind of caffeine on a daily basis or close to that often, please raise your hand. Those you without your hands raised make up a rare percentage of today’s Americans. An article published in the Chicago Tribune on October 19, 2011 by Julie Deardorff, stated that nearly 90% of Americans drink coffee on a regular basis.
B. Relevance Statement: When asked if you drank coffee or another source of caffeine regularly, the majority of the class...

Caffeine is a naturally occurring compound found in the leaves and fruits of certain plants. Caffeine is found in coffee, tea, cocoa, cola soft drinks and energy drinks. It may also be found in chocolate bars, energy bars and some over-the-counter medications, like cough syrup and slimming tablets.
Caffeine has had a long and rich history; humans have been consuming caffeine since the Stone Age. Early peoples found that chewing the seeds, bark, or leaves of certain plants had the effects of...

﻿Reference
U.S. Food and Drug Administration-Medicines in your home-Caffeine. (2007).
Retrieved January 25, 2015. From http://www.fda.gov
FDA and Caffeine:
90% of people in the world use caffeine in one form or another.
80% of adults consume caffeine every day in America.
Average daily consumption of 200 mg per day, (equals two 5-oz coffees or 4 sodas)
Caffeine is found naturally in plants, coffee beans, tea leaves, and chocolate.
Caffeine is added into many foods, drinks, and medicines.
It is...

Isolation of Caffeine in Tea
Introduction
Today’s world is addicted to coffee and tea for an easy wake up. Both contain caffeine, a drug known for its stimulant properties. Tea, by weight, contains approximately 2-4% caffeine, and the average cup of tea has anywhere from 40 to 120 mg of caffeine (Landgrebe, 327; Mayo Clinic Staff). According to the American Heart Association, caffeine not only stimulates the brain and nervous system, but it releases fatty acids from adipose tissue, and...

Republic of The Philippines
University of Southeastern Philippines
Institute of Computing
Caffeine
Informative Speech
John Cedrick D. Balaguer
BSIT 3
English 3 : Speech and Oral Communication Skills
1st Semester S.Y. 2013 – 2014
July 17, 2014
1 of 1
Caffeine has been used widely around the world over centuries, and today it is estimated that 80% of the world’s adult population consumes caffeine in one form or another. What is it about caffeine that has made it so...

What is the content difference between energy drinks and coffee and are they safe?
There are hundreds of different brands of energy drinks being marketed and their caffeine content per can or bottle ranges from just 50 mg to as much as 505 mg (Weise, 2008). Energy drinks are most commonly consumed by people 11-35 years old (Ballard et al., 2010). Energy drink companies can say anything they want about energy and performance effects of the drinks, and while some energy drinks are banned in...

﻿
Caffeine Addiction
1,3,7 –trimethylxanthine, also known as caffeine, is considered the most commonly used psychoactive drug in the world (Caffeine). Caffeine stimulates the central nervous system, eases fatigue, increases energy, and improves concentration and focus (Staff). “When purified, caffeine produces an intensely bitter white powder that provides a distinctive taste in soft drinks” (Caffeine). An addiction, is when a person ingests a substance, or engages in an activity that...

Amanda Carlson
Amy Ruppert
English 101, 9am
March 11, 2011
Synthesis Paper
Many Americans have included caffeine as a part of their daily diet whether they realize it or not. In fact, “caffeine is the most consumed psychoactive substance in the world” (Ruxton
How is this instead (Caffeine is especially common throughout…)
15). It is found very especially commonly throughout every day foods and consumed mostly though through coffee, tea, soda, and chocolate (Spiller 200). Many...

Discussion
Our results indicate that consumption of caffeinated coffee in comparison with decaffeinated coffee causes a slight rise in the mean change in pulse and respiration rate. However, the range bars of those that consumed caffeinated coffee and those that consumed decaffeinated coffee in The Mean Change in Pulse Rate graph overlap. Similarly the range bars in The Mean in Change in Respiration Rate graph overlap. This suggests that the mean change in pulse rate of decaffeinated and...

﻿Objective:
To extract caffeine from tea powder using polar - nonpolar solvent extraction technique.
Theory:
The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea...

Discussion
In this experiment, Caffeine was extracted from a commercial tea bag through solid-liquid extraction, and then further purified through sublimation. To begin the extraction, the commercial tea bag containing ~55mg of caffeine was placed in a mixture containing 2.2g of anhydrous sodium carbonate along with 20 ml of D.I. water. The sodium carbonate was placed into the solution to keep the caffeine from becoming slightly acidic(protonated), which would prevent the caffeine from being...

73 SERIES SPECTROPHOTOMETER
Application note: A09-010A
The quantitative determination of caffeine in beverages and soft drinks using UV wavelength spectroscopy
Introduction
Caffeine is a naturally occurring alkaloid which is found in the leaves, seeds or fruits of over 63 plants species worldwide. The most common sources of caffeine are coffee, cocoa beans, cola nuts and tea leaves and the worldwide consumption of products derived from these natural materials means that caffeine is one...

Title: Caffeine
Specific purpose: To inform my audience what exactly caffeine is, where it comes from, the benefits of caffeine and the negative effects of caffeine.
Introduction
A. Attention material: Do you ever feel like you will never make it through the day without caffeine? Is your first thought in the morning to get yourself a cup of coffee before you can even get your day started?
B. Tie to the audience: I am sure that most of you do consume at least one form of...

Mehrnaz Farnoosh
Speech 101 M-W 1 pm.
Informative Speech
TITLE: Caffeine
PURPOSE:
THESIS:
I. Introduction:
A. Attention Getter
B. Preview: How many of you woke up this morning and had a cup of coffee, tea, or an energy drink?
II. Body:
A. 90% of people in the world use caffeine in one form or another. In the U.S. 80% of adults consume caffeine every day (FDA.GOV) . Caffeine whether it is consumed in a food or as medicine it changes the way your...

Good evening everyone.
I’d like to introduce my self first. My name is David Cho
* Caffeine is used to provide a "boost of energy" or a feeling of being more alert. It's often used to stay awake longer and many people feel as though they "cannot function" in the morning without a cup of coffee to provide caffeine and the boost it gives them.
9 in 10 Americans consume some form of caffeine regularly, making it the most popular behavior-altering drug.
* Caffeine is a naturally...

Caffeine
Topic: Caffeine
General Purpose: To inform
Specific Purpose: At the end of my speech, my audience should understand the beneficial effects of caffeine, the negative effects and discuss what are considered safe levels of caffeine consumption.
Thesis Statement: The three areas I will cover in my speech are the beneficial effects of caffeine, the negative effects and discuss what are considered safe levels of caffeine consumption.
Introduction
Attention-Getter: If...

Caffeine is a bitter, white crystalline xanthine alkaloid and a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants, as well as enhancing the reward memory of pollinators. It is most commonly consumed by humans in infusions extracted from the seed of the coffee plant and the leaves of the tea bush, as well as from various foods and drinks...

﻿Caffeine and Coffee Consumption
Maddie Schierbeek
Psychology 7th block
Why do so many people, especially high school students consume so much caffeine? Perhaps 70-minute classes are too much to handle. Maybe the AP course load is overwhelming. Or perhaps problems at home cause a lack of sleep. Everyone has their reasons. On the other hand, there may be a scientific reasoning behind it. Caffeine highs are followed by caffeine lows. This cycle results in a need for caffeine: addiction....

Teratogenetics: Caffeine as a teratogen
Chase Palmer
Fremont High School
Hansen p.4
Abstract
The purpose of this paper is to identify the teratogenetic affects of caffeine in unborn children and breast feeding children. The following topics will be discussed: Risk of congenital anomalies, risk of spontaneous abortion, risk of low birth weight and preterm labor as well as, the critical period of the teratogen, short term and long term affects, and the changing danger of the teratogen...

Caffeine
What do you call a cow who's just given birth? De-calf-inated!
How many of you have had a cup of coffee today? How about a soft drink? Chocolate? An Excedrin? All of the above products have one thing in common: They all contain caffeine. In this speech, we'll look at caffeine's origins and how it spread, some caffeinated products, and the effects that caffeine has on the body. On any given day, four out of five Americans have a already digested it, making it the World's most popular...

Caffeine Concerns
How many times have you felt a bit tired and decided to rely on an energy drink, a cup of coffee, or a can of cola to charge your body with caffeine and boost your energy levels to maximum? If your answer is “frequently” then you are on a precarious path to poor health. Not only does caffeine have numerous emotional side effects, it will also disrupt your sleep, and cause harm to your body. For all of its immediate benefits, caffeine is one of the most harmful substances in...

Speech Outline
Title: Caffeine
Specific purpose: To inform my audience about the effects and health issues of caffeine.
Thesis: Caffeine can have many different effects on the body depending on the amount of consumption.
Introduction
A. Attention Getter – How many of you here consider yourself caffeine addicts? How much soda do you drink a day? One bottle? Two cans? More? How about coffee?
B. Thesis statement – Caffeine can have many different effects on the body depending on the...

Chi Nguyen
10/10/2014
Topic: The Science of Caffeine
Thesis question: How does Coffee work? What exactly does it do to our brain?
Working thesis: Caffeine, known as 1,3,7 - trimethylxanthine in coffee can help people staying awake when they are tired.
Caffeine, 1.3.7 - trimethylxanthine, is considered to be one of the most popular drug in the world.
Caffeine, nitrogenous organic compound of the alkaloid group, is a bitter substance that does have physiological effects.
Caffeine is...

In his book Caffeine Blues a famous researcher, health educator, and clinical nutritionist Stephen Cherniske compares remaining healthy and strong throughout life to a battle. “Caffeine is the Trojan horse. It looks like a gift but instead delivers adrenalin stress, low blood sugar, mood and energy swings, fatigue, depression, malnutrition, and disturbed sleep”. Although caffeine is considered a mild drug, the consequences of caffeine addiction are rather severe and include physical and mental...

-------------------------------------------------
Isolation of Caffeine from Coffee
Date of laboratory work:
10/9/2012
5:00-7:45
Date of report written:
10/15/2012
Introduction:
The purpose is to isolate caffeine from coffee by using the organic solvent dichloromethane (CH2Cl2) that is also referred to as direct contact. Calcium carbonate (CaCO3) is used to remove the tannins from the coffee. Afterwards an extraction is used to separate the organic layer (bottom)...

﻿Caffeine and the Placebo Effect
Plants produce caffeine as a protective pesticide, paralyzing feeding insects. This powerful substance has been used as a stimulant for centuries. The use of caffeine as an energy booster dates back to the Stone Age through coffee, tea and cocoa. Synonymous with caffeine, coffee has grown into a $70 billion industry with no signs of slowing down. It's a good source of antioxidants, a social atmosphere, and a legal stimulant. Coffee drinkers come back for more...

Teenagers today live in a very competitive world. It is more important than ever to succeed at school if you hope to have a chance in the job market afterwards. It’s no wonder that many young people worry about letting down their parents, their peers and themselves. In trying to please everyone. they take on too many tasks until it becomes harder and harder to balance homework assignments, parties, sports activities and friends. The result is that young people suffer from stress.
There are...

Caffeine and Sleep
• Sleep Topics
Caffeine has been called the most popular drug in the world. It is found naturally in over 60 plants including the coffee bean, tea leaf, kola nut and cacao pod. All over the world people consume caffeine on a daily basis in coffee, tea, cocoa, chocolate, some soft drinks, and some drugs.
Because caffeine is a stimulant, most people use it after waking up in the morning or to remain alert during the day. While it is important to note that caffeine...

Caffeine
How many of you here consider yourself caffeine addicts? How much coffee do you drink a day? One cups? Two cups? More? How about caffeinated sodas and energy drinks do you drink? I know I have at least one energy drink a day, what about you. Hi my name is Ryan George and I am going to talk about How Caffeine can effect you. Caffeine is an influence in our society these days and every few months we hear about how a study has shown that it is bad for us or good for us. What are we to...

The truth about caffeine
How many of you here consider yourself caffeine addicts? How much coffee do you drink a day? One cup? Two cups? More?
If you crave caffeine to get you through the day, you're not alone. About 68% of Americans say they're hooked on coffee this year, compared with 64% last year, according to the National Coffee Association.
But of course, Caffeine and related compounds are found not only in coffee, but also in tea, soft drinks, and chocolate....

﻿Description
To investigate the effect on caffeine on heart rate of water fleas and to understand the risk of high level consumption of caffeine to the health of the human circulatory system and nervous system.
Preview
Diagram 1: Chemical structure of caffeine
Image source: http://ismaastricht.wikispaces.com/file/list
The images above show the chemical structure of caffeine which has a chemical formula of C8H10N4O2. Caffeine was named by the International Union of Pure and Applied...

Rosalyn Elias
Speech 1311
Dr.Gilmore
July 26, 2010
The Effects of Caffeine on the Human Body
I. In a quote by Eddie Vedder, I read "Caffeine, the Gateway drug." Around 90 percent of Americans consume caffeine every single day in one form or another. Consuming as little as 100 mg of caffeine a day can lead a person to become "dependent" on caffeine, yet it is legal and unregulated in many jurisdictions. Making it the most popular drug by far. In this speech I am going to explain how...

Caffeine: A double-edged sword
Introduction:
Nowadays, caffeine is well known as the most popular and widely consumed drug. We can find it from foods and drinks, even many medications contain this substance, it is pervasive in our daily lives. Caffeine is one kind of rapidly absorbed organic compound. It is classified as stimulant witch can increase alertness and energy levels for a short period of time (website). Caffeine can be used as pharmacologic substance as well, for example, it...

Daniel Kim
12-3-12
HBS, period 1
Reaction time experiment
Caffeine and Reaction Time
1) Identify the Problem or Question
How does the consumption of caffeine affect the reaction time of the nervous system?
2) Introduction
Purpose of the experiment: To identify the whether or not caffeine increases or decreases the reaction time of the nervous system.
In our experiment, we have decided to use all the “cases” which will test how fast a signal from our brain will be sent to...

Caffeine is a drug that helps people stay awake or alert. It is also known as trimethylxanthine, a naturally occurring chemical stimulant. The formula for caffeine is C8H10N4O2. It shares several traits with famous drugs like amphetamines, cocaine and heroin. It uses the same biochemical mechanisms as these drugs to stimulate brain function. Caffeine has its benefits, but it also has several draw backs. In this paper, we will explore these and come up with an answer to “is it worth it?”...

﻿
What is the Effect of Caffeine Consumption on Endurance
among Elite Runners Under the Age of 40 in Developed Countries?
Abstract
Running and other endurance exercises are restricted by various natural causes of fatigue. (Callahan, 2011) Caffeine, a white crystalline drug, is often used by athletes as a stimulant during exercise to minimize the effects of fatigue. The purpose of this literature review is to determine if there is a causal...

Stage
1
Psychology
Research
Report
Affects
of
caffeine
on
reaction
time
Proposal:
Caffeine
is
used
by
many
people
to
increase
their
energy
levels.
It
alters
an
individual’s
alertness
and
their
reaction
time.
Though
the
most
common
form
of
caffeine
is
coffee,
it
can
also
be
found
in
certain...

What Do I Get From My Morning Coffee
Some people are morning people, but I am not one of those people. Every morning it seems as
if I am in a fog until that warm cup of coffee touches my lips. Similar to a drug habit, the more a person
drinks coffee, the more it seems like that person can’t function without it. But what are you really getting
from your coffee? Along with other factors, coffee can have both positive and negative effects on your
health.
Coffee improves the body’s tolerance...

Effec | Effect of caffeine on plant growth |
Description
This science fair project was performed to find out the effect on plant growth of adding caffeine to the soil. The experiment was done by using mung bean plants and watering them daily with water, water mixed with caffeine and with a coffee mixture.
Hypothesis
The mung beans watered using the coffee mixture will grow the fastest.
Overview
Caffeine and plant growth
The effect of adding caffeine to the soil and its effect on...

﻿
Extraction and Sublimation of Caffeine from Tea Leaves
By: Ashley Barnes
CH 236 – P8
Experiment 4 & 4.5
Due: 10/15/2014
Table 1. Table of Reagents
Discussion
The extraction yield refers to the percent of caffeine in the tea leaves at start of the extraction experiment. Tea leaves had 0.55 grams of mass per eight ounce serving. The weight of the extracted crude caffeine was 0.264 grams. Therefore, the extraction yield was 48%. This means that we pulled out almost half of...

﻿Article: “Faster but not smarter: effects of caffeine and caffeine withdrawal on alertness and performance
Journal: Psychopharmacology
Publication Date: 30 October 2012
Is Caffeine Helping or Hindering Your Performance?
Have you ever drunk coffee just for the taste? Studies show that that might be just what you’re doing when you take a sip of that bitter beverage.
Whether you’re in high school and didn’t get enough sleep between sports and academics, you’re in college and finals are around...

Have you ever been so tired that you've dozed off at work? Or tried to stop yourself from falling asleep while you're driving or even worse  got caught sleeping in class? These instances could have been prevented by doing what 90% of Americans do every day  by consuming CAFFEINE. If anyone here feels you can't make it though your day without a cup of coffee, you are probably addicted to it (I'll discuss more on that later). Here's an interesting fact: both words caffeine and coffee are derived...

Migraine headaches are the result of a disturbance in the neurochemistry of the central nervous system. They are relatively common, affecting three times as many women as men. Migraine sufferers typically report a definite pattern to their headaches, and they can report what stimuli bring them on. Most migraine sufferers experience their first attack before the age of 20. There is no single cause of migraines, but the tendency to get migraines does tend to run in families. When a migraine...

Does caffeine affect heart rate?
Background Information:
Caffeine is a bitter white crystalline xanthine alkaloid that acts as a psychoactive stimulant drug. A German chemist, Friedrich Ferdinand Runge, discovered it in 1819. Plants produce caffeine as an insecticide. It is found in varying quantities in the beans, leaves, and fruit of over 60 plants, where it acts as a natural pesticide that paralyses and kills certain insects feeding on the plants.
Cocoa in South America, coffee in Africa...

Science Fair Research Paper
How Caffeine effects plant growth. I decided to base my project on the effects Caffeine has on plants. I choose three different Basil herb plants and will water them with a little, medium and large amounts of Caffeine to determine the effects that Caffeine has on the plants.
What is Caffeine??? Caffeine is found in seeds, leaves and the fruits of some plants, where it acts as a natural pesticide. Humans mostly extract Caffeine from the bean of the coffee plant...

Should caffeine be banned for minors?
Is caffeine that much of a necessity to minors, if so should it be banned?
Caffeine is actually a drug. But In our society this drug is considered safe and people don't really consider it as a drug. This is because most people drink coffee, tea, soft drinks, and all other things that have caffeine. They use this for the boost of energy in the mornings and to go without drowsiness or fatigue during the day. Kids don't really drink coffee which has a lot...

Facts On Caffeine And Soft Drinks
Caffeine is found in coffee beans, tea leaves, cocoa beans, and other plants. Caffeine is a safe ingredient that consumers have enjoyed as part of many of our products for more than 100 years. The beverage industry offers both caffeine-free and caffeinated soft drinks.
One of the most studied ingredients
Caffeine is one of the most comprehensively studied ingredients in the food supply, with centuries of safe consumption in foods and beverages. In 1958,...

Introduction: (bring a monster, sip it) alright. How many of you here drink coffee, energy drinks, or soda daily? Well we aren’t alone; according to Villanova Health Service about 90 percent of Americans consume caffeine in one way or another every single day.
Transition: So what is caffeine you generally think of it in, Coffee, tea, soda, and chocolate, and its part of almost all college students daily diet.
I. Caffeine
A. What is caffeine
1. According to the Merriam-Webster...

It is known that American runs on caffeine. Caffeine is found in coffee, tea, hot chocolate, soda, chocolate and many medicines. When consumed, caffeine acts as a stimulant, which makes you feel more alert and aware. Many people drink liquids with caffeine because it helps them wake up and feel sharper. There have been many studies claiming caffeine has a positive or negative affect on your body. So what are we, as the consumers, to believe?
On the positive side, caffeine contains antioxidants...

Introduction
The aim of this experiment was to determine the effect of caffeine on resting body temperature. This has to do with homeostasis, which is the maintenance of equilibrium. In other words, it is a stable body state. Homeostasis refers to the process of keeping the internal body environment in a steady state, when the external environment is changed (Homeostasis 2). Humans are warm-blooded creatures that generate body heat internally and maintain body temperatures at a fairly constant...

﻿Caffeine write up
Caffeine is a stimulant
Stimulants are a class of drug that boosts, alternates and increases your energy levels and they activity of the nervous system.
Caffeine is in drinks, such as; Coca-Cola, tea and coffee, these are called caffeinated drinks.
Caffeine is not normally recognised as a drug to most.
Caffeine has an effect on your heart rate, (this is how fact your hear beats)
Caffeine is able to change the way your body and mind works
Chocolate is known...

Over 90% of Americans consume caffeine every day of the year. Caffeine is the ingredient that makes the public crave coffee, soda, chocolate and many other caffeine-carrying products. Americans consume about 45 million pounds of caffeine each year. In the United States, coffee drinkers drink an average of 2.6 cups per day. Total caffeine intake for coffee drinkers was 363.5 mg per day - this includes caffeine from coffee and other sources like soft drinks, food and drugs. Non-coffee drinkers...

How does Caffeine affect the human body?
Caffeine is the world’s most popular drug (Spiller, 1998), and can be found in over 60 species of plants throughout the world. Consumption of caffeine comes from cola, coffee, cocoa, tea, some medications and so much more. In this paper I will describe the effects of caffeine on the human body, from the health risks to how it can help your body; here are just some of the ways caffeine affects the human body both physically and psychologically.
First...

﻿Rachel DeLaune
CMST 2060
Caffeine
Specific Purpose: To inform my audience about the history of caffeine, how the body processes caffeine, and possible side effects of excessive caffeine consumption.
Central Idea: Caffeine has been around for centuries and has been used for it energizing effects on the body .
Introduction
I. It’s the night before your chemistry exam and you decide to learn three weeks worth of material in one night.
II. When 1:30 comes around and you can feel your eyes...

﻿Determination of Caffeine in Tea Samples
CONTENTS
1. 1. Introduction
2. 2. Theory
3. 3. Uses of Caffeine
4. 4. Effects of Caffeine
5. 5. Procedure
6. 6. Observations
7. 7. Result
INTRODUCTION
Tea is the most commonly and widely used soft beverage in the household. It acts as a stimulant for central nervous system and skeletal muscles. That is why tea removes fatigue, tiredness and headache. It also increases the capacity of thinking. It is also used for lowering body...

﻿12). Caffeine acts in the body by getting absorbed in the body through the cells relatively fast, after which it is expelled through the liver. The effects are that caffeine being a stimulant in the body, a short while after consumption with an increase in wakefulness. When taken in large amounts, it causes physical effects like irritability, insomnia and even restlessness.
13) + 14) Caffeine passes through the body membranes from the first sip, entering your blood stream through the lining of...

﻿Speech/Outline
General Goal: I want to inform my audience
Specific Goal: I would like the audience to understand the problems with over consuming the product caffeine.
Thesis Statement: there are numerous side effects and health problems associated with caffeine. Caffeine should not be consumed to “energize”. Many often turn to caffeine to help, and doing so will lead you to become addicted to the substance much like a drug and will affect many aspects of your everyday life.
Introduction:...

The Effects of Caffeine on the Heart Rate of Daphnia This lab was designed to show how caffeine affected the heart rate of daphnia after exposing them to different concentrations of caffeine for ten minutes. Caffeine is a stimulant, which, in humans, causes heart rates and blood pressure to increase. Its effects range from mild alertness to heightened anxiety and body tension. We wanted to see if caffeine affected the daphnia's heart rate in the same way.
We filled three containers with three...

EXTRACTION OF CAFFEINE FROM TEA LEAVES
ABSTRACT
Caffeine extraction from the commercial tea leaves (Lipton Yellow Label Tea) that was done is multiple extraction. 4 tea bags were used in the experiment; tea leaves were weighed having 8.5333 grams. The leaves were boiled in a beaker with 150ml of water; the aqueous tea extract was transferred in a seperatory funnel mixed with DCM (20ml), done thrice. The DCM layer was washed with 20ml 6M NaOH in the seperatory funnel; the organic...

Extraction of Caffeine from Tea Leaves
Marc Tugaoen, Kristine Vanzuela, Rafael Villanueva, Justeen Wong
Department of Chemistry, University of Santo Tomas, Manila, Philippines
Abstract
This experiment has been divided into 4 set-ups, first was the solid-liquid extraction, next was the liquid-liquid extraction, then the sublimation and last was the melting point determination. The solid-liquid and liquid-liquid extraction were both done during the first meeting, the DCM layer was filtered...

Extraction of Caffeine from Thea sinensis
Abstract
Extraction of Caffeine from Thea sinensis main objective is to isolate, purify characterized caffeine from tea leaves. Sublimation technique was used to get the % yield which is 0.07%. The melting point of the standard caffeine with the sublimate is 229°C.
Introduction
The active ingredient that makes tea and coffee valuable to humans is caffeine. Caffeine is an alkaloid; a class of naturally occurring compounds containing nitrogen and...

The Effect of Caffeine on Heart Rate
Caffeine is made by plants as a way of getting rid of insects. Cocoa
is produced in South America, coffee in Africa and tea is produced in
Asia have all been used for a very long time to give us a little rush
in order to keep us going. Now caffeine is also used as a flavour
enhancer in cola and other soft drinks also it has medicinal uses in
aspirin preparations and is found in weight-loss drugs and as a
stimulant in normal people in everyday...

Abstract: Caffeine, (C8 H10 N4 O2) a white, crystalline alkaloid known as a nervous system stimulant found commonly in tea leaves and coffee, can be extracted using the method of sublimation with the use of Methylene Chloride (CH2Cl2) and Sodium Hydroxide; both can repeatedly rinse the green (unroasted) coffee beans from the caffeine.
Keywords: Caffeine, Methylene Chloride, Sodium Hydroxide, Anhydrous Sodium Sulfate
I. Introduction
Caffeine is an alkaloid of the methylxanthine family. Its...

﻿Isolation, purification and characterization of alkaloid caffeine from tea leaves
Date Submitted: September 3, 2014
Abstract
Caffeine is one of the main constituents of tea leaves. In this experiment, 0.0039 g of pure caffeine was isolated from tea leaves. This was done through solid-liquid extraction followed by multiple liquid-liquid extraction. Then crude material obtained was then purified by sublimation. The isolated caffeine was subjected to thin layer chromatography (TLC)...

Introduction
The experiment aimed to establish a correlation between caffeine intake and the effects it has on both the pulse and respiration rates of an individual after undergoing moderate-intense cardiovascular exercise. Caffeine itself is one of the most heavily consumed drugs on the planet; it is estimated that over 90% of Americans consume caffeine daily (Richard Lovett, 2005, New Scientist iss. 2518) and is the most widely used stimulant in the world (Arcerio, P, Ormsbee, J, 2009, pg....

Extraction of Caffeine from Lipton Yellow Label Teal Leaves
Arlie Bamiano, Jealine Bernabe, Petrenne Caimbon*, Jhia Caso
Department of Biology, University of Santo Tomas
Abstract
In order to extract pure caffeine from Lipton Yellow Label tea leaves, several extractions and phase transition techniques were employed to 6.5029 grams of sample. Initially, the tea leaves were boiled in water to extract tea from the leaves (Solid-Liquid Extraction). After extracting the tea, several steps...

Effects of Caffeine and Nicotine on Lumbriculus variegatus
INTRODUCTION
An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus, black worms, to household drugs. Lumbriculus variegatus was chosen as the experimental organism because of their transparent bodies and their simple physiology.
Their transparent bodies help the experimenters to easily see their pulse. Another reason for choosing this specific organism is their body...

Abstract
This work describes the extraction of caffeine from tea leaves to determine its % caffeine. The extraction process selectively dissolves one or more compounds in a mixture into an appropriate solvent. In this experiment, it was visible in the process wherein the components of the tea leaves were dissolved in two solvents, water and dichloromethane (DCM), with DCM used for multiple extractions. The organic layer was evaporated and the determined % caffeine was 0.12%. Furthermore, the...

Extraction of Caffeine from Tea Leaves
Department of Biological Sciences, College of Science
University of Santo Tomas
España, Manila, 1028
ABSTRACT:
Caffeine is a white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants. It is most commonly consumed by humans in infusions extracted from the seed of the coffee plant and the leaves of the tea bush, as well as from various foods and drinks...

Extraction of Caffeine from Tea Leaves
Santos, Raphael, Samson, Nonia Carla, *Tabora, Brylle, Tan, Kate Michal
Department of Biological Sciences, University of Santo Tomas, Manila, Philippines
Abstract
Tea leaves are natural products that are harvested from agriculture. Caffeine, on the other hand, is a stimulant that has been shown to speed up the time of reaction, increase alertness, and improve one’s concentration. What we did in this experiment was to extract the alkaloid caffeine...

Extraction of caffeine from tea bags
ABSTRACT
Caffeine extraction from the commercial tea leaves (Lipton Yellow Label Tea) that was done is multiple extraction. 4 tea bags were used in the experiment; tea leaves were weighed having 8.5333 grams. The leaves were boiled in a beaker with 150ml of water; the aqueous tea extract was transferred in a seperatory funnel mixed with DCM (20ml), done thrice. The DCM layer was washed with 20ml 6M NaOH in the seperatory funnel; the organic layer was...

Food Safety and Standards Authority of India Proposes Regulation of Energy Drinks, and Caffeine
Introduction 1. Energy drinks are non-alcoholic beverages containing caffeine, guarana,
glucuronolactone, taurine, ginseng, inositol, carnitine, B-vitamins etc. as main ingredients that act as stimulants. In recent years, a number of different energy drinks have been introduced in the Indian market to provide an energy boost or as dietary supplements. These drinks contain high levels of caffeine...

Isolation of Caffeine from Tea Leaves
Introduction Caffeine is a member of the class of compounds organic chemists call alkaloids. Alkaloids are nitrogencontaining basic compounds that are found in plants. They usually taste bitter and often are physiologically active in humans. The names of some of these compounds are familiar to you even if the structures aren’t: nicotine, morphine, strychnine, and cocaine. The role or roles these compounds play in the life of the plants in which they are...

Date of experiment: September 3rd, 2013
Organic Chemistry II – CHLB330
Name: Symone MoxeyLab Partner: Lynden Cooper
Isolation of caffeine from tea leave
Abstract:-
Introduction:-
Caffeine is probably the most commonly used addictive drug. This drug is found in a number of things ingested by people. It belongs to a group of nitrogen bases called purines. Because caffeine possesses these base-like properties, it is described as an alkaloid. They usually taste bitter and often are...

Extraction of Caffeine from Tealeaves
Perez, Albert Solomon K.*; Quiambao, Marie Angela C;.Pascua, Hanna Harriette R.; Patricio, Maria Roxanne DC.;
2-Chemistry, Department of Chemistry, College of Science
University of Santo Tomas
España St., 1015, Manila
Abstract
Caffeine is soluble in both water and organic solvents, solid-liquid extraction and liquid-liquid extraction were used in the experimentation process. Caffeine was extracted using hot water, however, due to...

Psychology Report
The effect of caffeine on long-term memory
Introduction:
What is caffeine?
Caffeine is one of the commonly consumed or most ingested stimulant or psychoactive substance in the world, known for it’s effect on vigilance and alertness level (A. Smith, 2002) or at least perceived to jolt our tired brains, when consumed in normal or moderate quantity. Caffeine is available to us from various sources like coffee, tea, cocoa, soft drinks and other such products. Caffeine is...

﻿Biology:
Practical: Daphnia Heart rate
Aim:
To investigate Caffeine's effect on the heart rate of Daphnia.
Background:
Caffeine is a white crystalline, a bitter alkaloid ( C8-H10-N4-O2) usually derived from coffee or tea and used in medicine chiefly as a nervous system stimulant. Generally, Caffeine has been linked to restlessness, anxiety and insomnia. Leading to heart and circulatory disorders. Plants produce caffeine as an insecticide. ( A substance or preparation used for...

﻿
Effect of Caffeine Consumption on Academic Performance in College Undergraduates
Morgan Bolen, Maria Naula-Quintero, and Carlin Wright
Michigan State University
Abstract
In this study we are interested in assessing the relationship between average amount of caffeine consumed per day and academic performance. We hypothesized that an increase in average caffeine consumed per day would result in increased academic success. A short survey was composed...

The effect of caffeine on typing speed, accuracy and heart beat
1. Introduction
Caffeine is a substance found in coffee, tea and most sodas. When it is consumed, it is a mild stimulant. The energy drink, Monster, contains caffeine, which has the ability to manipulate adenosine (adrenaline), a substance present in the brain that is used to transmit brain signals to different parts of the body. Adenosine causes an increase in alertness and awareness. Modern studies show that there is...

﻿Investigating the effects of Caffeine on the heart rate of Daphnia Shrimp.
Aim: In this experiment we are trying to find out how varying the concentration of caffeine can affect the heart rate of Daphnia shrimp.
Prediction: I predict that caffeine will increase the heart rate of the shrimp .
Introduction: I believe the results will comply with my prediction. Caffeine is a compound found in especially tea and coffee plants and acts as a natural pesticide. Caffeine is a central nervous...

﻿Chapter II
REVIEW OF RELATED LITERATURE
This chapter presents both foreign and local related literatures relevant to the study. This relevance is shown by the proponents in order to give more reason and understanding of the proposition.
Related Literature and Studies
Downsides in Caffeine
New research from John Hopkins Medical School shows that performance increases due to caffeine intake are the result of caffeine drinkers experiencing a short-term reversal of caffeine withdrawal. In...

﻿Results and Discussion
A. Table of Result of Extraction
Weight (g)
Tea Leaves
5.5783
Crude Caffeine
0.0246
Empty Beaker
117.5350
Beaker + Crude Caffeine
117.5596
The table above shows the weight of the sample tea leaves, the crude caffeine content in the sample, the empty beaker used in the extraction, and the beaker with the crude caffeine. It is induced from there that for that amount of sample tea leaves, which is equivalent to three bags of Nature’s Pride Tea; there is a...

The Effect of Caffeine on Athletes during Endurance Sports
Caffeine is a mild stimulant that is found naturally in at least 63 plant species. Caffeine can be found in the leaves, stems, seeds, and roots of these various plants. It is also part of the methylxanthine family. Caffeine consists of a xanthine molecule with three methyl groups attached to it (Wikipedia). Caffeine can be found in many products like sodas, tea, and coffee, but it also occurs in several other products such as...

03 - 31 - 2006
RESULTS:
In this experiment the effect of different hormones on heart rate of _Daphnia_ was examined. It was investigated which substances act as stimulants and which substances act as depressant. Initially, _Daphnia_ was placed on depression slide under the microscope and the average heart rate was determined. Subsequently, _Daphnia_ was treated with different type of hormone and the effect on Daphnia heart rate was observed. It was investigated which substances act as...

﻿The Truth About Caffeine How many of you here consider yourself caffeine addicts? How much coffee do you drink in a day? One cup? Two cups? More? How about caffeinated sodas? Caffeine is pervasive in our society these days and every few months we hear about how a study has shown that it is bad for us or good for us. What are we to believe? - See more at: http://www.best-speech-topics.com/sample-informative-speech.html#sthash.KjQRc69h.dpuf
Today, I'd like to give you some of the facts about...

﻿To investigate the effect of different caffeine concentration on the heartbeat rate of Daphnia at room temperature.
Introduction:
Caffeine is found, and produced in many plant species to function as a natural pesticide, and as an inhibitor of seed germination of other nearby coffee seedlings to give it a better chance of survival. Caffeine is able to paralyze and kill certain insects upon feeding on the plants that produce caffeine.
Coffee, tea and cocoa are common...